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gstreamer/sys/androidmedia/gstamcvideoenc.c
Jan Schmidt 6c1e5ab311 androidmedia: Support float i-frame-interval 
Android 25 added support for i-frame-interval to be a floating
point value. Store the property as a float and use the newer
version when it's available.
2020-02-09 02:19:12 +11:00

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/*
* Initially based on gst-plugins-bad/sys/androidmedia/gstamcvideodec.c
*
* Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
*
* Copyright (C) 2012, Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* Copyright (C) 2013, Lemote Ltd.
* Author: Chen Jie <chenj@lemote.com>
*
* Copyright (C) 2015, Sebastian Dröge <sebastian@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#ifdef HAVE_ORC
#include <orc/orc.h>
#else
#define orc_memcpy memcpy
#endif
#ifdef HAVE_JNI_H
#include "gstjniutils.h"
#endif
#include "gstamcvideoenc.h"
#include "gstamc-constants.h"
GST_DEBUG_CATEGORY_STATIC (gst_amc_video_enc_debug_category);
#define GST_CAT_DEFAULT gst_amc_video_enc_debug_category
typedef struct _BufferIdentification BufferIdentification;
struct _BufferIdentification
{
guint64 timestamp;
};
static BufferIdentification *
buffer_identification_new (GstClockTime timestamp)
{
BufferIdentification *id = g_slice_new (BufferIdentification);
id->timestamp = timestamp;
return id;
}
static void
buffer_identification_free (BufferIdentification * id)
{
g_slice_free (BufferIdentification, id);
}
/* prototypes */
static void gst_amc_video_enc_finalize (GObject * object);
static GstStateChangeReturn
gst_amc_video_enc_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_amc_video_enc_open (GstVideoEncoder * encoder);
static gboolean gst_amc_video_enc_close (GstVideoEncoder * encoder);
static gboolean gst_amc_video_enc_start (GstVideoEncoder * encoder);
static gboolean gst_amc_video_enc_stop (GstVideoEncoder * encoder);
static gboolean gst_amc_video_enc_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state);
static gboolean gst_amc_video_enc_flush (GstVideoEncoder * encoder);
static GstFlowReturn gst_amc_video_enc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame);
static GstFlowReturn gst_amc_video_enc_finish (GstVideoEncoder * encoder);
static GstFlowReturn gst_amc_video_enc_drain (GstAmcVideoEnc * self);
#define BIT_RATE_DEFAULT (2 * 1024 * 1024)
#define I_FRAME_INTERVAL_DEFAULT 0
enum
{
PROP_0,
PROP_BIT_RATE,
PROP_I_FRAME_INTERVAL,
PROP_I_FRAME_INTERVAL_FLOAT
};
/* class initialization */
static void gst_amc_video_enc_class_init (GstAmcVideoEncClass * klass);
static void gst_amc_video_enc_init (GstAmcVideoEnc * self);
static void gst_amc_video_enc_base_init (gpointer g_class);
static GstVideoEncoderClass *parent_class = NULL;
GType
gst_amc_video_enc_get_type (void)
{
static volatile gsize type = 0;
if (g_once_init_enter (&type)) {
GType _type;
static const GTypeInfo info = {
sizeof (GstAmcVideoEncClass),
gst_amc_video_enc_base_init,
NULL,
(GClassInitFunc) gst_amc_video_enc_class_init,
NULL,
NULL,
sizeof (GstAmcVideoEnc),
0,
(GInstanceInitFunc) gst_amc_video_enc_init,
NULL
};
_type = g_type_register_static (GST_TYPE_VIDEO_ENCODER, "GstAmcVideoEnc",
&info, 0);
GST_DEBUG_CATEGORY_INIT (gst_amc_video_enc_debug_category, "amcvideoenc", 0,
"Android MediaCodec video encoder");
g_once_init_leave (&type, _type);
}
return type;
}
static GstAmcFormat *
create_amc_format (GstAmcVideoEnc * encoder, GstVideoCodecState * input_state,
GstCaps * src_caps)
{
GstAmcVideoEncClass *klass;
GstStructure *s;
const gchar *name;
const gchar *mime = NULL;
const gchar *profile_string = NULL;
const gchar *level_string = NULL;
struct
{
const gchar *key;
gint id;
} amc_profile = {
NULL, -1};
struct
{
const gchar *key;
gint id;
} amc_level = {
NULL, -1};
gint color_format;
gint stride, slice_height;
GstAmcFormat *format = NULL;
GstVideoInfo *info = &input_state->info;
GError *err = NULL;
klass = GST_AMC_VIDEO_ENC_GET_CLASS (encoder);
s = gst_caps_get_structure (src_caps, 0);
if (!s)
return NULL;
name = gst_structure_get_name (s);
profile_string = gst_structure_get_string (s, "profile");
level_string = gst_structure_get_string (s, "level");
if (strcmp (name, "video/mpeg") == 0) {
gint mpegversion;
if (!gst_structure_get_int (s, "mpegversion", &mpegversion))
return NULL;
if (mpegversion == 4) {
mime = "video/mp4v-es";
if (profile_string) {
amc_profile.key = "profile"; /* named profile ? */
amc_profile.id = gst_amc_mpeg4_profile_from_string (profile_string);
}
if (level_string) {
amc_level.key = "level"; /* named level ? */
amc_level.id = gst_amc_mpeg4_level_from_string (level_string);
}
} else if ( /* mpegversion == 1 || */ mpegversion == 2)
mime = "video/mpeg2";
} else if (strcmp (name, "video/x-h263") == 0) {
mime = "video/3gpp";
} else if (strcmp (name, "video/x-h264") == 0) {
mime = "video/avc";
if (profile_string) {
amc_profile.key = "profile"; /* named profile ? */
amc_profile.id = gst_amc_avc_profile_from_string (profile_string);
}
if (level_string) {
amc_level.key = "level"; /* named level ? */
amc_level.id = gst_amc_avc_level_from_string (level_string);
}
} else if (strcmp (name, "video/x-vp8") == 0) {
mime = "video/x-vnd.on2.vp8";
} else if (strcmp (name, "video/x-vp9") == 0) {
mime = "video/x-vnd.on2.vp9";
} else {
GST_ERROR_OBJECT (encoder, "Failed to convert caps(%s/...) to any mime",
name);
return NULL;
}
format = gst_amc_format_new_video (mime, info->width, info->height, &err);
if (!format) {
GST_ERROR_OBJECT (encoder, "Failed to create a \"%s,%dx%d\" MediaFormat",
mime, info->width, info->height);
GST_ELEMENT_ERROR_FROM_ERROR (encoder, err);
return NULL;
}
color_format =
gst_amc_video_format_to_color_format (klass->codec_info,
mime, info->finfo->format);
if (color_format == -1)
goto video_format_failed_to_convert;
gst_amc_format_set_int (format, "bitrate", encoder->bitrate, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
gst_amc_format_set_int (format, "color-format", color_format, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
stride = GST_ROUND_UP_4 (info->width); /* safe (?) */
gst_amc_format_set_int (format, "stride", stride, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
slice_height = info->height;
gst_amc_format_set_int (format, "slice-height", slice_height, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
if (profile_string) {
if (amc_profile.id == -1)
goto unsupported_profile;
/* FIXME: Set to any value in AVCProfile* leads to
* codec configuration fail */
/* gst_amc_format_set_int (format, amc_profile.key, 0x40); */
}
if (level_string) {
if (amc_level.id == -1)
goto unsupported_level;
/* gst_amc_format_set_int (format, amc_level.key, amc_level.id); */
}
/* On Android N_MR1 and higher, i-frame-interval can be a float value */
#ifdef HAVE_JNI_H
if (gst_amc_jni_get_android_level () >= 25) {
GST_LOG_OBJECT (encoder, "Setting i-frame-interval to %f",
encoder->i_frame_int);
gst_amc_format_set_float (format, "i-frame-interval", encoder->i_frame_int,
&err);
} else
#endif
{
int i_frame_int = encoder->i_frame_int;
/* Round a fractional interval to 1 per sec on older Android */
if (encoder->i_frame_int > 0 && encoder->i_frame_int < 1.0)
i_frame_int = 1;
gst_amc_format_set_int (format, "i-frame-interval", i_frame_int, &err);
}
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
if (info->fps_d)
gst_amc_format_set_float (format, "frame-rate",
((gfloat) info->fps_n) / info->fps_d, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
encoder->format = info->finfo->format;
if (!gst_amc_color_format_info_set (&encoder->color_format_info,
klass->codec_info, mime, color_format, info->width, info->height,
stride, slice_height, 0, 0, 0, 0))
goto color_format_info_failed_to_set;
GST_DEBUG_OBJECT (encoder,
"Color format info: {color_format=%d, width=%d, height=%d, "
"stride=%d, slice-height=%d, crop-left=%d, crop-top=%d, "
"crop-right=%d, crop-bottom=%d, frame-size=%d}",
encoder->color_format_info.color_format, encoder->color_format_info.width,
encoder->color_format_info.height, encoder->color_format_info.stride,
encoder->color_format_info.slice_height,
encoder->color_format_info.crop_left, encoder->color_format_info.crop_top,
encoder->color_format_info.crop_right,
encoder->color_format_info.crop_bottom,
encoder->color_format_info.frame_size);
return format;
video_format_failed_to_convert:
GST_ERROR_OBJECT (encoder, "Failed to convert video format");
gst_amc_format_free (format);
return NULL;
color_format_info_failed_to_set:
GST_ERROR_OBJECT (encoder, "Failed to set up GstAmcColorFormatInfo");
gst_amc_format_free (format);
return NULL;
unsupported_profile:
GST_ERROR_OBJECT (encoder, "Unsupported profile '%s'", profile_string);
gst_amc_format_free (format);
return NULL;
unsupported_level:
GST_ERROR_OBJECT (encoder, "Unsupported level '%s'", level_string);
gst_amc_format_free (format);
return NULL;
}
static GstCaps *
caps_from_amc_format (GstAmcFormat * amc_format)
{
GstCaps *caps = NULL;
gchar *mime = NULL;
gint width, height;
gint amc_profile, amc_level;
gfloat frame_rate = 0.0;
gint fraction_n, fraction_d;
GError *err = NULL;
if (!gst_amc_format_get_string (amc_format, "mime", &mime, &err)) {
GST_ERROR ("Failed to get 'mime': %s", err->message);
g_clear_error (&err);
return NULL;
}
if (!gst_amc_format_get_int (amc_format, "width", &width, &err) ||
!gst_amc_format_get_int (amc_format, "height", &height, &err)) {
GST_ERROR ("Failed to get size: %s", err->message);
g_clear_error (&err);
g_free (mime);
return NULL;
}
gst_amc_format_get_float (amc_format, "frame-rate", &frame_rate, NULL);
gst_util_double_to_fraction (frame_rate, &fraction_n, &fraction_d);
if (strcmp (mime, "video/mp4v-es") == 0) {
const gchar *profile_string, *level_string;
caps =
gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
if (gst_amc_format_get_int (amc_format, "profile", &amc_profile, NULL)) {
profile_string = gst_amc_mpeg4_profile_to_string (amc_profile);
if (!profile_string)
goto unsupported_profile;
gst_caps_set_simple (caps, "profile", G_TYPE_STRING, profile_string,
NULL);
}
if (gst_amc_format_get_int (amc_format, "level", &amc_level, NULL)) {
level_string = gst_amc_mpeg4_level_to_string (amc_profile);
if (!level_string)
goto unsupported_level;
gst_caps_set_simple (caps, "level", G_TYPE_STRING, level_string, NULL);
}
} else if (strcmp (mime, "video/mpeg2") == 0) {
caps = gst_caps_new_simple ("video/mpeg", "mpegversion", 2, NULL);
} else if (strcmp (mime, "video/3gpp") == 0) {
caps = gst_caps_new_empty_simple ("video/x-h263");
} else if (strcmp (mime, "video/avc") == 0) {
const gchar *profile_string, *level_string;
caps =
gst_caps_new_simple ("video/x-h264",
"stream-format", G_TYPE_STRING, "byte-stream", NULL);
if (gst_amc_format_get_int (amc_format, "profile", &amc_profile, NULL)) {
profile_string = gst_amc_avc_profile_to_string (amc_profile, NULL);
if (!profile_string)
goto unsupported_profile;
gst_caps_set_simple (caps, "profile", G_TYPE_STRING, profile_string,
NULL);
}
if (gst_amc_format_get_int (amc_format, "level", &amc_level, NULL)) {
level_string = gst_amc_avc_level_to_string (amc_profile);
if (!level_string)
goto unsupported_level;
gst_caps_set_simple (caps, "level", G_TYPE_STRING, level_string, NULL);
}
} else if (strcmp (mime, "video/x-vnd.on2.vp8") == 0) {
caps = gst_caps_new_empty_simple ("video/x-vp8");
} else if (strcmp (mime, "video/x-vnd.on2.vp9") == 0) {
caps = gst_caps_new_empty_simple ("video/x-vp9");
}
gst_caps_set_simple (caps, "width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"framerate", GST_TYPE_FRACTION, fraction_n, fraction_d, NULL);
g_free (mime);
return caps;
unsupported_profile:
GST_ERROR ("Unsupported amc profile id %d", amc_profile);
g_free (mime);
gst_caps_unref (caps);
return NULL;
unsupported_level:
GST_ERROR ("Unsupported amc level id %d", amc_level);
g_free (mime);
gst_caps_unref (caps);
return NULL;
}
static void
gst_amc_video_enc_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstAmcVideoEncClass *videoenc_class = GST_AMC_VIDEO_ENC_CLASS (g_class);
const GstAmcCodecInfo *codec_info;
GstPadTemplate *templ;
GstCaps *sink_caps, *src_caps;
gchar *longname;
codec_info =
g_type_get_qdata (G_TYPE_FROM_CLASS (g_class), gst_amc_codec_info_quark);
/* This happens for the base class and abstract subclasses */
if (!codec_info)
return;
videoenc_class->codec_info = codec_info;
gst_amc_codec_info_to_caps (codec_info, &sink_caps, &src_caps);
/* Add pad templates */
templ =
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, sink_caps);
gst_element_class_add_pad_template (element_class, templ);
gst_caps_unref (sink_caps);
templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, src_caps);
gst_element_class_add_pad_template (element_class, templ);
gst_caps_unref (src_caps);
longname = g_strdup_printf ("Android MediaCodec %s", codec_info->name);
gst_element_class_set_metadata (element_class,
codec_info->name,
"Codec/Encoder/Video/Hardware",
longname, "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
g_free (longname);
}
static void
gst_amc_video_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAmcVideoEnc *encoder;
GstState state;
gboolean codec_active;
GError *err = NULL;
encoder = GST_AMC_VIDEO_ENC (object);
GST_OBJECT_LOCK (encoder);
state = GST_STATE (encoder);
codec_active = (encoder->codec && state != GST_STATE_READY
&& state != GST_STATE_NULL);
switch (prop_id) {
case PROP_BIT_RATE:
encoder->bitrate = g_value_get_uint (value);
g_mutex_lock (&encoder->codec_lock);
if (encoder->codec) {
if (!gst_amc_codec_set_dynamic_bitrate (encoder->codec, &err,
encoder->bitrate)) {
g_mutex_unlock (&encoder->codec_lock);
goto wrong_state;
}
}
g_mutex_unlock (&encoder->codec_lock);
if (err) {
GST_ELEMENT_WARNING_FROM_ERROR (encoder, err);
g_clear_error (&err);
}
break;
case PROP_I_FRAME_INTERVAL:
encoder->i_frame_int = g_value_get_uint (value);
if (codec_active)
goto wrong_state;
break;
case PROP_I_FRAME_INTERVAL_FLOAT:
encoder->i_frame_int = g_value_get_float (value);
if (codec_active)
goto wrong_state;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (encoder);
return;
/* ERROR */
wrong_state:
{
GST_WARNING_OBJECT (encoder, "setting property in wrong state");
GST_OBJECT_UNLOCK (encoder);
}
}
static void
gst_amc_video_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAmcVideoEnc *encoder;
encoder = GST_AMC_VIDEO_ENC (object);
GST_OBJECT_LOCK (encoder);
switch (prop_id) {
case PROP_BIT_RATE:
g_value_set_uint (value, encoder->bitrate);
break;
case PROP_I_FRAME_INTERVAL:
g_value_set_uint (value, encoder->i_frame_int);
break;
case PROP_I_FRAME_INTERVAL_FLOAT:
g_value_set_float (value, encoder->i_frame_int);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (encoder);
}
static void
gst_amc_video_enc_class_init (GstAmcVideoEncClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoEncoderClass *videoenc_class = GST_VIDEO_ENCODER_CLASS (klass);
GParamFlags dynamic_flag = 0;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_amc_video_enc_set_property;
gobject_class->get_property = gst_amc_video_enc_get_property;
gobject_class->finalize = gst_amc_video_enc_finalize;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_amc_video_enc_change_state);
videoenc_class->start = GST_DEBUG_FUNCPTR (gst_amc_video_enc_start);
videoenc_class->stop = GST_DEBUG_FUNCPTR (gst_amc_video_enc_stop);
videoenc_class->open = GST_DEBUG_FUNCPTR (gst_amc_video_enc_open);
videoenc_class->close = GST_DEBUG_FUNCPTR (gst_amc_video_enc_close);
videoenc_class->flush = GST_DEBUG_FUNCPTR (gst_amc_video_enc_flush);
videoenc_class->set_format = GST_DEBUG_FUNCPTR (gst_amc_video_enc_set_format);
videoenc_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_amc_video_enc_handle_frame);
videoenc_class->finish = GST_DEBUG_FUNCPTR (gst_amc_video_enc_finish);
// On Android >= 19, we can set bitrate dynamically
// so add the flag so apps can detect it.
if (gst_amc_codec_have_dynamic_bitrate ())
dynamic_flag = GST_PARAM_MUTABLE_PLAYING;
g_object_class_install_property (gobject_class, PROP_BIT_RATE,
g_param_spec_uint ("bitrate", "Bitrate", "Bitrate in bit/sec", 1,
G_MAXINT, BIT_RATE_DEFAULT,
dynamic_flag | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_I_FRAME_INTERVAL,
g_param_spec_uint ("i-frame-interval", "I-frame interval",
"The frequency of I frames expressed in seconds between I frames (0 for automatic)",
0, G_MAXINT, I_FRAME_INTERVAL_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_I_FRAME_INTERVAL_FLOAT,
g_param_spec_float ("i-frame-interval-float", "I-frame interval",
"The frequency of I frames expressed in seconds between I frames (0 for automatic). "
"Fractional intervals work on Android >= 25",
0, G_MAXFLOAT, I_FRAME_INTERVAL_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_amc_video_enc_init (GstAmcVideoEnc * self)
{
g_mutex_init (&self->codec_lock);
g_mutex_init (&self->drain_lock);
g_cond_init (&self->drain_cond);
self->bitrate = BIT_RATE_DEFAULT;
self->i_frame_int = I_FRAME_INTERVAL_DEFAULT;
}
static gboolean
gst_amc_video_enc_open (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self = GST_AMC_VIDEO_ENC (encoder);
GstAmcVideoEncClass *klass = GST_AMC_VIDEO_ENC_GET_CLASS (self);
GError *err = NULL;
GST_DEBUG_OBJECT (self, "Opening encoder");
g_mutex_lock (&self->codec_lock);
self->codec = gst_amc_codec_new (klass->codec_info->name, TRUE, &err);
if (!self->codec) {
g_mutex_unlock (&self->codec_lock);
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
return FALSE;
}
g_mutex_unlock (&self->codec_lock);
self->started = FALSE;
self->flushing = TRUE;
GST_DEBUG_OBJECT (self, "Opened encoder");
return TRUE;
}
static gboolean
gst_amc_video_enc_close (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self = GST_AMC_VIDEO_ENC (encoder);
GST_DEBUG_OBJECT (self, "Closing encoder");
g_mutex_lock (&self->codec_lock);
if (self->codec) {
GError *err = NULL;
gst_amc_codec_release (self->codec, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
gst_amc_codec_free (self->codec);
}
self->codec = NULL;
g_mutex_unlock (&self->codec_lock);
self->started = FALSE;
self->flushing = TRUE;
GST_DEBUG_OBJECT (self, "Closed encoder");
return TRUE;
}
static void
gst_amc_video_enc_finalize (GObject * object)
{
GstAmcVideoEnc *self = GST_AMC_VIDEO_ENC (object);
g_mutex_clear (&self->codec_lock);
g_mutex_clear (&self->drain_lock);
g_cond_clear (&self->drain_cond);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_amc_video_enc_change_state (GstElement * element, GstStateChange transition)
{
GstAmcVideoEnc *self;
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GError *err = NULL;
g_return_val_if_fail (GST_IS_AMC_VIDEO_ENC (element),
GST_STATE_CHANGE_FAILURE);
self = GST_AMC_VIDEO_ENC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
self->downstream_flow_ret = GST_FLOW_OK;
self->draining = FALSE;
self->started = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
self->flushing = TRUE;
gst_amc_codec_flush (self->codec, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
break;
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
self->downstream_flow_ret = GST_FLOW_FLUSHING;
self->started = FALSE;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
#define MAX_FRAME_DIST_TIME (5 * GST_SECOND)
#define MAX_FRAME_DIST_FRAMES (100)
static GstVideoCodecFrame *
_find_nearest_frame (GstAmcVideoEnc * self, GstClockTime reference_timestamp)
{
GList *l, *best_l = NULL;
GList *finish_frames = NULL;
GstVideoCodecFrame *best = NULL;
guint64 best_timestamp = 0;
guint64 best_diff = G_MAXUINT64;
BufferIdentification *best_id = NULL;
GList *frames;
frames = gst_video_encoder_get_frames (GST_VIDEO_ENCODER (self));
for (l = frames; l; l = l->next) {
GstVideoCodecFrame *tmp = l->data;
BufferIdentification *id = gst_video_codec_frame_get_user_data (tmp);
guint64 timestamp, diff;
/* This happens for frames that were just added but
* which were not passed to the component yet. Ignore
* them here!
*/
if (!id)
continue;
timestamp = id->timestamp;
if (timestamp > reference_timestamp)
diff = timestamp - reference_timestamp;
else
diff = reference_timestamp - timestamp;
if (best == NULL || diff < best_diff) {
best = tmp;
best_timestamp = timestamp;
best_diff = diff;
best_l = l;
best_id = id;
/* For frames without timestamp we simply take the first frame */
if ((reference_timestamp == 0 && !GST_CLOCK_TIME_IS_VALID (timestamp))
|| diff == 0)
break;
}
}
if (best_id) {
for (l = frames; l && l != best_l; l = l->next) {
GstVideoCodecFrame *tmp = l->data;
BufferIdentification *id = gst_video_codec_frame_get_user_data (tmp);
guint64 diff_time, diff_frames;
if (id->timestamp > best_timestamp)
break;
if (id->timestamp == 0 || best_timestamp == 0)
diff_time = 0;
else
diff_time = best_timestamp - id->timestamp;
diff_frames = best->system_frame_number - tmp->system_frame_number;
if (diff_time > MAX_FRAME_DIST_TIME
|| diff_frames > MAX_FRAME_DIST_FRAMES) {
finish_frames =
g_list_prepend (finish_frames, gst_video_codec_frame_ref (tmp));
}
}
}
if (finish_frames) {
g_warning ("%s: Too old frames, bug in encoder -- please file a bug",
GST_ELEMENT_NAME (self));
for (l = finish_frames; l; l = l->next) {
gst_video_encoder_finish_frame (GST_VIDEO_ENCODER (self), l->data);
}
}
if (best)
gst_video_codec_frame_ref (best);
g_list_foreach (frames, (GFunc) gst_video_codec_frame_unref, NULL);
g_list_free (frames);
return best;
}
static gboolean
gst_amc_video_enc_set_src_caps (GstAmcVideoEnc * self, GstAmcFormat * format)
{
GstCaps *caps;
GstVideoCodecState *output_state;
caps = caps_from_amc_format (format);
if (!caps) {
GST_ERROR_OBJECT (self, "Failed to create output caps");
return FALSE;
}
/* It may not be proper to reference self->input_state here,
* because MediaCodec is an async model -- input_state may change multiple times,
* the passed-in MediaFormat may not be the one matched to the current input_state.
*
* Though, currently, the final src caps only calculate
* width/height/pixel-aspect-ratio/framerate/codec_data from self->input_state.
*
* If input width/height/codec_data change(is_format_change), it will restart
* MediaCodec, which means in these cases, self->input_state is matched.
*/
output_state = gst_video_encoder_set_output_state (GST_VIDEO_ENCODER (self),
caps, self->input_state);
gst_video_codec_state_unref (output_state);
if (!gst_video_encoder_negotiate (GST_VIDEO_ENCODER (self)))
return FALSE;
return TRUE;
}
/* The weird handling of cropping, alignment and everything is taken from
* platform/frameworks/media/libstagefright/colorconversion/ColorConversion.cpp
*/
static gboolean
gst_amc_video_enc_fill_buffer (GstAmcVideoEnc * self, GstBuffer * inbuf,
GstAmcBuffer * outbuf, const GstAmcBufferInfo * buffer_info)
{
GstVideoCodecState *input_state = self->input_state;
/* The fill_buffer runs in the same thread as set_format?
* then we can use state->info safely */
GstVideoInfo *info = &input_state->info;
if (buffer_info->size < self->color_format_info.frame_size)
return FALSE;
return gst_amc_color_format_copy (&self->color_format_info, outbuf,
buffer_info, info, inbuf, COLOR_FORMAT_COPY_IN);
}
static GstFlowReturn
gst_amc_video_enc_handle_output_frame (GstAmcVideoEnc * self,
GstAmcBuffer * buf, const GstAmcBufferInfo * buffer_info,
GstVideoCodecFrame * frame)
{
GstFlowReturn flow_ret = GST_FLOW_OK;
GstVideoEncoder *encoder = GST_VIDEO_ENCODER_CAST (self);
/* The BUFFER_FLAG_CODEC_CONFIG logic is borrowed from
* gst-omx. see *_handle_output_frame in
* gstomxvideoenc.c and gstomxh264enc.c */
if ((buffer_info->flags & BUFFER_FLAG_CODEC_CONFIG)
&& buffer_info->size > 0) {
GstStructure *s;
GstVideoCodecState *state;
state = gst_video_encoder_get_output_state (encoder);
s = gst_caps_get_structure (state->caps, 0);
if (!strcmp (gst_structure_get_name (s), "video/x-h264")) {
gst_video_codec_state_unref (state);
if (buffer_info->size > 4 &&
GST_READ_UINT32_BE (buf->data + buffer_info->offset) == 0x00000001) {
GList *l = NULL;
GstBuffer *hdrs;
GST_DEBUG_OBJECT (self, "got codecconfig in byte-stream format");
hdrs = gst_buffer_new_and_alloc (buffer_info->size);
gst_buffer_fill (hdrs, 0, buf->data + buffer_info->offset,
buffer_info->size);
GST_BUFFER_PTS (hdrs) =
gst_util_uint64_scale (buffer_info->presentation_time_us,
GST_USECOND, 1);
l = g_list_append (l, hdrs);
gst_video_encoder_set_headers (encoder, l);
}
} else {
GstBuffer *codec_data;
GST_DEBUG_OBJECT (self, "Handling codec data");
codec_data = gst_buffer_new_and_alloc (buffer_info->size);
gst_buffer_fill (codec_data, 0, buf->data + buffer_info->offset,
buffer_info->size);
state->codec_data = codec_data;
gst_video_codec_state_unref (state);
if (!gst_video_encoder_negotiate (encoder)) {
gst_video_codec_frame_unref (frame);
return GST_FLOW_NOT_NEGOTIATED;
}
return GST_FLOW_OK;
}
}
if (buffer_info->size > 0) {
GstBuffer *out_buf;
GstPad *srcpad;
srcpad = GST_VIDEO_ENCODER_SRC_PAD (encoder);
out_buf =
gst_video_encoder_allocate_output_buffer (encoder, buffer_info->size);
gst_buffer_fill (out_buf, 0, buf->data + buffer_info->offset,
buffer_info->size);
GST_BUFFER_PTS (out_buf) =
gst_util_uint64_scale (buffer_info->presentation_time_us, GST_USECOND,
1);
if (frame) {
frame->output_buffer = out_buf;
flow_ret = gst_video_encoder_finish_frame (encoder, frame);
} else {
/* This sometimes happens at EOS or if the input is not properly framed,
* let's handle it gracefully by allocating a new buffer for the current
* caps and filling it
*/
GST_ERROR_OBJECT (self, "No corresponding frame found");
flow_ret = gst_pad_push (srcpad, out_buf);
}
} else if (frame) {
flow_ret = gst_video_encoder_finish_frame (encoder, frame);
}
return flow_ret;
}
static void
gst_amc_video_enc_loop (GstAmcVideoEnc * self)
{
GstVideoCodecFrame *frame;
GstFlowReturn flow_ret = GST_FLOW_OK;
gboolean is_eos;
GstAmcBufferInfo buffer_info;
GstAmcBuffer *buf;
gint idx;
GError *err = NULL;
GST_VIDEO_ENCODER_STREAM_LOCK (self);
retry:
GST_DEBUG_OBJECT (self, "Waiting for available output buffer");
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
/* Wait at most 100ms here, some codecs don't fail dequeueing if
* the codec is flushing, causing deadlocks during shutdown */
idx =
gst_amc_codec_dequeue_output_buffer (self->codec, &buffer_info, 100000,
&err);
GST_VIDEO_ENCODER_STREAM_LOCK (self);
/*} */
if (idx < 0 || self->amc_format) {
if (self->flushing) {
g_clear_error (&err);
goto flushing;
}
/* The comments from https://android.googlesource.com/platform/cts/+/android-4.3_r3.1/tests/tests/media/src/android/media/cts/EncodeDecodeTest.java
* line 539 says INFO_OUTPUT_FORMAT_CHANGED is not expected for an encoder
*/
if (self->amc_format || idx == INFO_OUTPUT_FORMAT_CHANGED) {
GstAmcFormat *format;
gchar *format_string;
GST_DEBUG_OBJECT (self, "Output format has changed");
format = (idx == INFO_OUTPUT_FORMAT_CHANGED) ?
gst_amc_codec_get_output_format (self->codec,
&err) : self->amc_format;
if (err) {
format = self->amc_format;
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
}
if (self->amc_format) {
if (format != self->amc_format)
gst_amc_format_free (self->amc_format);
self->amc_format = NULL;
}
if (!format)
goto format_error;
format_string = gst_amc_format_to_string (format, &err);
if (err) {
gst_amc_format_free (format);
goto format_error;
}
GST_DEBUG_OBJECT (self, "Got new output format: %s", format_string);
g_free (format_string);
if (!gst_amc_video_enc_set_src_caps (self, format)) {
gst_amc_format_free (format);
goto format_error;
}
gst_amc_format_free (format);
if (idx >= 0)
goto process_buffer;
goto retry;
}
switch (idx) {
case INFO_OUTPUT_BUFFERS_CHANGED:
/* Handled internally */
g_assert_not_reached ();
break;
case INFO_TRY_AGAIN_LATER:
GST_DEBUG_OBJECT (self, "Dequeueing output buffer timed out");
goto retry;
break;
case G_MININT:
GST_ERROR_OBJECT (self, "Failure dequeueing input buffer");
goto dequeue_error;
break;
default:
g_assert_not_reached ();
break;
}
goto retry;
}
process_buffer:
GST_DEBUG_OBJECT (self,
"Got output buffer at index %d: size %d time %" G_GINT64_FORMAT
" flags 0x%08x", idx, buffer_info.size, buffer_info.presentation_time_us,
buffer_info.flags);
buf = gst_amc_codec_get_output_buffer (self->codec, idx, &err);
if (err) {
if (self->flushing) {
g_clear_error (&err);
goto flushing;
}
goto failed_to_get_output_buffer;
} else if (!buf) {
goto got_null_output_buffer;
}
frame =
_find_nearest_frame (self,
gst_util_uint64_scale (buffer_info.presentation_time_us, GST_USECOND, 1));
is_eos = ! !(buffer_info.flags & BUFFER_FLAG_END_OF_STREAM);
flow_ret =
gst_amc_video_enc_handle_output_frame (self, buf, &buffer_info, frame);
gst_amc_buffer_free (buf);
buf = NULL;
if (!gst_amc_codec_release_output_buffer (self->codec, idx, FALSE, &err)) {
if (self->flushing) {
g_clear_error (&err);
goto flushing;
}
goto failed_release;
}
if (is_eos || flow_ret == GST_FLOW_EOS) {
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
if (self->draining) {
GST_DEBUG_OBJECT (self, "Drained");
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
} else if (flow_ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (self, "Component signalled EOS");
flow_ret = GST_FLOW_EOS;
}
g_mutex_unlock (&self->drain_lock);
GST_VIDEO_ENCODER_STREAM_LOCK (self);
} else {
GST_DEBUG_OBJECT (self, "Finished frame: %s", gst_flow_get_name (flow_ret));
}
self->downstream_flow_ret = flow_ret;
if (flow_ret != GST_FLOW_OK)
goto flow_error;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
return;
dequeue_error:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
format_error:
{
if (err)
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
else
GST_ELEMENT_ERROR (self, LIBRARY, FAILED, (NULL),
("Failed to handle format"));
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
failed_release:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
flushing:
{
GST_DEBUG_OBJECT (self, "Flushing -- stopping task");
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_FLUSHING;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
return;
}
flow_error:
{
if (flow_ret == GST_FLOW_EOS) {
GST_DEBUG_OBJECT (self, "EOS");
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
} else if (flow_ret == GST_FLOW_NOT_LINKED || flow_ret < GST_FLOW_EOS) {
GST_ELEMENT_FLOW_ERROR (self, flow_ret);
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self),
gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
}
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
failed_to_get_output_buffer:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
got_null_output_buffer:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Got no output buffer"));
gst_pad_push_event (GST_VIDEO_ENCODER_SRC_PAD (self), gst_event_new_eos ());
gst_pad_pause_task (GST_VIDEO_ENCODER_SRC_PAD (self));
self->downstream_flow_ret = GST_FLOW_ERROR;
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
return;
}
}
static gboolean
gst_amc_video_enc_start (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self;
self = GST_AMC_VIDEO_ENC (encoder);
self->last_upstream_ts = 0;
self->drained = TRUE;
self->downstream_flow_ret = GST_FLOW_OK;
self->started = FALSE;
self->flushing = TRUE;
return TRUE;
}
static gboolean
gst_amc_video_enc_stop (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self;
GError *err = NULL;
self = GST_AMC_VIDEO_ENC (encoder);
GST_DEBUG_OBJECT (self, "Stopping encoder");
self->flushing = TRUE;
if (self->started) {
gst_amc_codec_flush (self->codec, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
gst_amc_codec_stop (self->codec, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
self->started = FALSE;
}
gst_pad_stop_task (GST_VIDEO_ENCODER_SRC_PAD (encoder));
self->downstream_flow_ret = GST_FLOW_FLUSHING;
self->drained = TRUE;
g_mutex_lock (&self->drain_lock);
self->draining = FALSE;
g_cond_broadcast (&self->drain_cond);
g_mutex_unlock (&self->drain_lock);
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = NULL;
if (self->amc_format) {
gst_amc_format_free (self->amc_format);
self->amc_format = NULL;
}
GST_DEBUG_OBJECT (self, "Stopped encoder");
return TRUE;
}
static gboolean
gst_amc_video_enc_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state)
{
GstAmcVideoEnc *self;
GstAmcFormat *format = NULL;
GstCaps *allowed_caps = NULL;
gboolean is_format_change = FALSE;
gboolean needs_disable = FALSE;
gchar *format_string;
gboolean r = FALSE;
GError *err = NULL;
self = GST_AMC_VIDEO_ENC (encoder);
GST_DEBUG_OBJECT (self, "Setting new caps %" GST_PTR_FORMAT, state->caps);
/* Check if the caps change is a real format change or if only irrelevant
* parts of the caps have changed or nothing at all.
*/
is_format_change |= self->color_format_info.width != state->info.width;
is_format_change |= self->color_format_info.height != state->info.height;
needs_disable = self->started;
/* If the component is not started and a real format change happens
* we have to restart the component. If no real format change
* happened we can just exit here.
*/
if (needs_disable && !is_format_change) {
/* Framerate or something minor changed */
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = gst_video_codec_state_ref (state);
GST_DEBUG_OBJECT (self,
"Already running and caps did not change the format");
return TRUE;
}
if (needs_disable && is_format_change) {
gst_amc_video_enc_drain (self);
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
gst_amc_video_enc_stop (GST_VIDEO_ENCODER (self));
GST_VIDEO_ENCODER_STREAM_LOCK (self);
gst_amc_video_enc_close (GST_VIDEO_ENCODER (self));
if (!gst_amc_video_enc_open (GST_VIDEO_ENCODER (self))) {
GST_ERROR_OBJECT (self, "Failed to open codec again");
return FALSE;
}
if (!gst_amc_video_enc_start (GST_VIDEO_ENCODER (self))) {
GST_ERROR_OBJECT (self, "Failed to start codec again");
}
}
/* srcpad task is not running at this point */
if (self->input_state)
gst_video_codec_state_unref (self->input_state);
self->input_state = NULL;
GST_DEBUG_OBJECT (self, "picking an output format ...");
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
if (!allowed_caps) {
GST_DEBUG_OBJECT (self, "... but no peer, using template caps");
allowed_caps =
gst_pad_get_pad_template_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
}
GST_DEBUG_OBJECT (self, "chose caps %" GST_PTR_FORMAT, allowed_caps);
allowed_caps = gst_caps_truncate (allowed_caps);
format = create_amc_format (self, state, allowed_caps);
if (!format)
goto quit;
format_string = gst_amc_format_to_string (format, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
GST_DEBUG_OBJECT (self, "Configuring codec with format: %s",
GST_STR_NULL (format_string));
g_free (format_string);
if (!gst_amc_codec_configure (self->codec, format, NULL, &err)) {
GST_ERROR_OBJECT (self, "Failed to configure codec");
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
goto quit;
}
if (!gst_amc_codec_start (self->codec, &err)) {
GST_ERROR_OBJECT (self, "Failed to start codec");
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
goto quit;
}
self->amc_format = format;
format = NULL;
self->input_state = gst_video_codec_state_ref (state);
self->started = TRUE;
/* Start the srcpad loop again */
self->flushing = FALSE;
self->downstream_flow_ret = GST_FLOW_OK;
gst_pad_start_task (GST_VIDEO_ENCODER_SRC_PAD (self),
(GstTaskFunction) gst_amc_video_enc_loop, encoder, NULL);
r = TRUE;
quit:
if (allowed_caps)
gst_caps_unref (allowed_caps);
if (format)
gst_amc_format_free (format);
return r;
}
static gboolean
gst_amc_video_enc_flush (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self;
GError *err = NULL;
self = GST_AMC_VIDEO_ENC (encoder);
GST_DEBUG_OBJECT (self, "Flushing encoder");
if (!self->started) {
GST_DEBUG_OBJECT (self, "Codec not started yet");
return TRUE;
}
self->flushing = TRUE;
gst_amc_codec_flush (self->codec, &err);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
/* Wait until the srcpad loop is finished,
* unlock GST_VIDEO_ENCODER_STREAM_LOCK to prevent deadlocks
* caused by using this lock from inside the loop function */
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
GST_PAD_STREAM_LOCK (GST_VIDEO_ENCODER_SRC_PAD (self));
GST_PAD_STREAM_UNLOCK (GST_VIDEO_ENCODER_SRC_PAD (self));
GST_VIDEO_ENCODER_STREAM_LOCK (self);
self->flushing = FALSE;
/* Start the srcpad loop again */
self->last_upstream_ts = 0;
self->drained = TRUE;
self->downstream_flow_ret = GST_FLOW_OK;
gst_pad_start_task (GST_VIDEO_ENCODER_SRC_PAD (self),
(GstTaskFunction) gst_amc_video_enc_loop, encoder, NULL);
GST_DEBUG_OBJECT (self, "Flush encoder");
return TRUE;
}
static GstFlowReturn
gst_amc_video_enc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame)
{
GstAmcVideoEnc *self;
gint idx;
GstAmcBuffer *buf;
GstAmcBufferInfo buffer_info;
GstClockTime timestamp, duration, timestamp_offset = 0;
BufferIdentification *id;
GError *err = NULL;
self = GST_AMC_VIDEO_ENC (encoder);
GST_DEBUG_OBJECT (self, "Handling frame");
if (!self->started) {
GST_ERROR_OBJECT (self, "Codec not started yet");
gst_video_codec_frame_unref (frame);
return GST_FLOW_NOT_NEGOTIATED;
}
if (self->flushing)
goto flushing;
if (self->downstream_flow_ret != GST_FLOW_OK)
goto downstream_error;
timestamp = frame->pts;
duration = frame->duration;
if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (frame)) {
if (gst_amc_codec_request_key_frame (self->codec, &err)) {
GST_DEBUG_OBJECT (self, "Passed keyframe request to MediaCodec");
}
if (err) {
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
g_clear_error (&err);
}
}
again:
/* Make sure to release the base class stream lock, otherwise
* _loop() can't call _finish_frame() and we might block forever
* because no input buffers are released */
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
/* Wait at most 100ms here, some codecs don't fail dequeueing if
* the codec is flushing, causing deadlocks during shutdown */
idx = gst_amc_codec_dequeue_input_buffer (self->codec, 100000, &err);
GST_VIDEO_ENCODER_STREAM_LOCK (self);
if (idx < 0) {
if (self->flushing || self->downstream_flow_ret == GST_FLOW_FLUSHING) {
g_clear_error (&err);
goto flushing;
}
switch (idx) {
case INFO_TRY_AGAIN_LATER:
GST_DEBUG_OBJECT (self, "Dequeueing input buffer timed out");
goto again; /* next try */
break;
case G_MININT:
GST_ERROR_OBJECT (self, "Failed to dequeue input buffer");
goto dequeue_error;
default:
g_assert_not_reached ();
break;
}
goto again;
}
if (self->flushing) {
memset (&buffer_info, 0, sizeof (buffer_info));
gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info, NULL);
goto flushing;
}
if (self->downstream_flow_ret != GST_FLOW_OK) {
memset (&buffer_info, 0, sizeof (buffer_info));
gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info, &err);
if (err && !self->flushing)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
g_clear_error (&err);
goto downstream_error;
}
/* Now handle the frame */
/* Copy the buffer content in chunks of size as requested
* by the port */
buf = gst_amc_codec_get_input_buffer (self->codec, idx, &err);
if (err)
goto failed_to_get_input_buffer;
else if (!buf)
goto got_null_input_buffer;
memset (&buffer_info, 0, sizeof (buffer_info));
buffer_info.offset = 0;
buffer_info.size = MIN (self->color_format_info.frame_size, buf->size);
gst_amc_buffer_set_position_and_limit (buf, NULL, buffer_info.offset,
buffer_info.size);
if (!gst_amc_video_enc_fill_buffer (self, frame->input_buffer, buf,
&buffer_info)) {
memset (&buffer_info, 0, sizeof (buffer_info));
gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info, &err);
if (err && !self->flushing)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
g_clear_error (&err);
gst_amc_buffer_free (buf);
buf = NULL;
goto buffer_fill_error;
}
gst_amc_buffer_free (buf);
buf = NULL;
if (timestamp != GST_CLOCK_TIME_NONE) {
buffer_info.presentation_time_us =
gst_util_uint64_scale (timestamp + timestamp_offset, 1, GST_USECOND);
self->last_upstream_ts = timestamp + timestamp_offset;
}
if (duration != GST_CLOCK_TIME_NONE)
self->last_upstream_ts += duration;
id = buffer_identification_new (timestamp + timestamp_offset);
if (GST_VIDEO_CODEC_FRAME_IS_SYNC_POINT (frame))
buffer_info.flags |= BUFFER_FLAG_SYNC_FRAME;
gst_video_codec_frame_set_user_data (frame, id,
(GDestroyNotify) buffer_identification_free);
GST_DEBUG_OBJECT (self,
"Queueing buffer %d: size %d time %" G_GINT64_FORMAT " flags 0x%08x",
idx, buffer_info.size, buffer_info.presentation_time_us,
buffer_info.flags);
if (!gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info, &err)) {
if (self->flushing) {
g_clear_error (&err);
goto flushing;
}
goto queue_error;
}
self->drained = FALSE;
gst_video_codec_frame_unref (frame);
return self->downstream_flow_ret;
downstream_error:
{
GST_ERROR_OBJECT (self, "Downstream returned %s",
gst_flow_get_name (self->downstream_flow_ret));
gst_video_codec_frame_unref (frame);
return self->downstream_flow_ret;
}
failed_to_get_input_buffer:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
got_null_input_buffer:
{
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS, (NULL),
("Got no input buffer"));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
buffer_fill_error:
{
GST_ELEMENT_ERROR (self, RESOURCE, WRITE, (NULL),
("Failed to write input into the amc buffer(write %dB to a %"
G_GSIZE_FORMAT "B buffer)", self->color_format_info.frame_size,
buf->size));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
dequeue_error:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
queue_error:
{
GST_ELEMENT_ERROR_FROM_ERROR (self, err);
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
flushing:
{
GST_DEBUG_OBJECT (self, "Flushing -- returning FLUSHING");
gst_video_codec_frame_unref (frame);
return GST_FLOW_FLUSHING;
}
}
static GstFlowReturn
gst_amc_video_enc_finish (GstVideoEncoder * encoder)
{
GstAmcVideoEnc *self;
self = GST_AMC_VIDEO_ENC (encoder);
return gst_amc_video_enc_drain (self);
}
static GstFlowReturn
gst_amc_video_enc_drain (GstAmcVideoEnc * self)
{
GstFlowReturn ret;
gint idx;
GError *err = NULL;
GST_DEBUG_OBJECT (self, "Draining codec");
if (!self->started) {
GST_DEBUG_OBJECT (self, "Codec not started yet");
return GST_FLOW_OK;
}
/* Don't send drain buffer twice, this doesn't work */
if (self->drained) {
GST_DEBUG_OBJECT (self, "Codec is drained already");
return GST_FLOW_OK;
}
/* Make sure to release the base class stream lock, otherwise
* _loop() can't call _finish_frame() and we might block forever
* because no input buffers are released */
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
/* Send an EOS buffer to the component and let the base
* class drop the EOS event. We will send it later when
* the EOS buffer arrives on the output port.
* Wait at most 0.5s here. */
idx = gst_amc_codec_dequeue_input_buffer (self->codec, 500000, &err);
GST_VIDEO_ENCODER_STREAM_LOCK (self);
if (idx >= 0) {
GstAmcBuffer *buf;
GstAmcBufferInfo buffer_info;
buf = gst_amc_codec_get_input_buffer (self->codec, idx, &err);
if (buf) {
GST_VIDEO_ENCODER_STREAM_UNLOCK (self);
g_mutex_lock (&self->drain_lock);
self->draining = TRUE;
memset (&buffer_info, 0, sizeof (buffer_info));
buffer_info.size = 0;
buffer_info.presentation_time_us =
gst_util_uint64_scale (self->last_upstream_ts, 1, GST_USECOND);
buffer_info.flags |= BUFFER_FLAG_END_OF_STREAM;
gst_amc_buffer_set_position_and_limit (buf, NULL, 0, 0);
gst_amc_buffer_free (buf);
buf = NULL;
if (gst_amc_codec_queue_input_buffer (self->codec, idx, &buffer_info,
&err)) {
GST_DEBUG_OBJECT (self, "Waiting until codec is drained");
g_cond_wait (&self->drain_cond, &self->drain_lock);
GST_DEBUG_OBJECT (self, "Drained codec");
ret = GST_FLOW_OK;
} else {
GST_ERROR_OBJECT (self, "Failed to queue input buffer");
if (self->flushing) {
g_clear_error (&err);
ret = GST_FLOW_FLUSHING;
} else {
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
ret = GST_FLOW_ERROR;
}
}
self->drained = TRUE;
self->draining = FALSE;
g_mutex_unlock (&self->drain_lock);
GST_VIDEO_ENCODER_STREAM_LOCK (self);
} else {
GST_ERROR_OBJECT (self, "Failed to get buffer for EOS: %d", idx);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
ret = GST_FLOW_ERROR;
}
} else {
GST_ERROR_OBJECT (self, "Failed to acquire buffer for EOS: %d", idx);
if (err)
GST_ELEMENT_WARNING_FROM_ERROR (self, err);
ret = GST_FLOW_ERROR;
}
return ret;
}
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